CN218235615U

CN218235615U - Silencer for sand blasting machine fan and sand blasting machine

Info

Publication number: CN218235615U
Application number: CN202222071398.0U
Authority: CN
Inventors: 范振洋; 尹学荣; 彭瑞; 朱振辉
Original assignee: Suzhou Zhongyao Technology Co ltd
Current assignee: Suzhou Zhongyao Technology Co ltd
Priority date: 2022-08-05
Filing date: 2022-08-05
Publication date: 2023-01-06
Anticipated expiration: 2032-08-05

Abstract

The utility model discloses a muffler and sand blasting machine that sand blasting machine fan was used. The muffler that sand blasting machine fan was used includes the urceolus, set up in inside inner tube of urceolus, be used for connecting the urceolus with the connecting piece of inner tube, with the air-supply line of the air intake intercommunication of urceolus and with the play tuber pipe of the air outlet intercommunication of urceolus, be equipped with first amortization medium on the inside wall of urceolus, the inner tube is equipped with the end cover respectively along the both ends of axis direction, the urceolus with form airflow channel between the lateral wall of inner tube. The utility model discloses a muffler has good noise cancelling effect.

Description

Silencer for sand blasting machine blower and sand blasting machine

Technical Field

The utility model relates to a metal injection moulding technical field, specific is a muffler and sand blasting machine that sand blasting machine fan used.

Background

In the MIM (Metal injection Molding) industry, injection molded product blanks typically have flash, the presence of which affects product quality and needs to be removed. Along with the increase of labor cost and the improvement of high-efficiency production requirements, manufacturers gradually adopt an automatic sand blasting machine to sand blast the injection molding blank to remove burrs and flash. When the sand blasting machine works, airflow in a centrifugal fan of the sand blasting machine is large, huge noise is generated, and noise generated by sand impacting on a product blank often exceeds the standard of noise in a workshop (according to the regulation of GB12348-2008 environmental noise emission standard in industrial enterprise and factory boundary, the noise emission standard of a production workshop and a working place in China is less than or equal to 90 dB).

In view of the above, those skilled in the art are continuously seeking to reduce the noise of the blower of the sand blasting machine in order to improve the working environment of the workshop.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect among the prior art, the embodiment of the utility model provides a muffler and sand blasting machine that sand blasting machine fan was used, this muffler that sand blasting machine fan was used has good noise elimination effect.

The embodiment of the application discloses: the utility model provides a muffler that sand blasting machine fan used, includes the urceolus, set up in inside inner tube of urceolus, be used for connecting the urceolus with the connecting piece of inner tube, with the air-supply line of the air intake intercommunication of urceolus and with the play tuber pipe of the air outlet intercommunication of urceolus, be equipped with first amortization medium on the inside wall of urceolus, the inner tube is equipped with the end cover respectively along the both ends of axis direction, the urceolus with form airflow channel between the lateral wall of inner tube.

Specifically, the silencer for the sand blasting machine fan further comprises a steel wire mesh connected to the inner wall of the outer barrel, and the steel wire mesh is used for fixing the first silencing medium.

Specifically, the inner cylinder is of a hollow structure, and a plurality of through holes are formed in the side wall of the inner cylinder.

Specifically, a second silencing medium is arranged inside the inner cylinder.

Specifically, the second sound-deadening medium completely fills the inside of the inner tube.

Specifically, the connecting piece includes a plurality of support rod groups that distribute along the axial of inner tube, and every support rod group includes a plurality of edges the circumference evenly distributed's of inner tube bracing piece, the both ends of bracing piece respectively with the inner tube with the urceolus is connected.

Specifically, the connecting piece further comprises a reinforcing piece connected to the side wall of the inner barrel, and one end, facing the inner barrel, of the supporting rod is connected to the reinforcing piece.

The embodiment of the application also discloses: a sandblasting machine comprising a silencer as described in this embodiment, the silencer being connected to a fan of the sandblasting machine.

The utility model discloses following beneficial effect has at least:

the silencer for the sand blasting machine blower in the embodiment has the advantages that the outer barrel and the first silencing medium arranged on the inner side wall of the outer barrel can have good resistance sound absorption and noise reduction effects on the medium and high frequency broadband characteristics of air flow, the outer barrel and the inner barrel are matched to have good resistance noise absorption and noise reduction effects on the low and medium frequency characteristics of the air flow, and the scheme adopts two kinds of high-frequency and low-frequency silencing areas in a resistance channel, so that the silencing frequency band can be widened to the maximum width, and the good silencing effect is realized.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a silencer for a blower of a sand blasting machine according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a silencer for a blower of a sand blasting machine in an embodiment of the present invention;

FIG. 3 is a schematic structural view of an inner cylinder in an embodiment of the present invention;

fig. 4 is a schematic view illustrating the connection between the support rod and the reinforcement member according to the embodiment of the present invention.

Reference numerals of the above figures: 1. an outer cylinder; 2. an inner barrel; 21. an end cap; 22. a through hole; 31. a support bar; 32. a reinforcement; 4. an air inlet pipe; 41. a flange; 5. an air outlet pipe; 6. a first sound-attenuating medium; 7. steel wire mesh; 8. a second sound-damping medium.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The muffler that the sand blasting machine fan of this embodiment was used for being connected with the fan air outlet of sand blasting machine to fall the noise to the gas of fan output.

Referring to fig. 1 to 3, the silencer for the blower of the sand blasting machine of the present embodiment includes an outer cylinder 1, an inner cylinder 2, a connecting member, an air inlet pipe 4, and an air outlet pipe 5. The outer cylinder 1 is provided with a first inner cavity which is communicated with the outside through an air inlet and an air outlet of the outer cylinder 1; one end of the air inlet pipe 4 is connected with an air inlet of the outer cylinder 1, and the other end of the air inlet pipe 4 is connected with an air outlet of the fan through a flange 41; the air outlet pipe 5 is connected with an air outlet of the outer barrel 1; the inner side wall of the outer cylinder 1 is provided with a first silencing medium 6. The inner cylinder 2 is connected in the first inner cavity of the outer cylinder 1 through a connecting piece, the inner cylinder 2 is provided with a second inner cavity, two ends of the inner cylinder 2 along the axis direction are respectively provided with an end cover 21 used for sealing the second inner cavity, and an airflow channel used for allowing air to pass is formed between the inner wall of the outer cylinder 1 and the outer side wall of the inner cylinder 2.

Specifically, the first sound-deadening medium 6 may be wave cotton (also called wave cotton or egg cotton) or sound-deadening cotton, and is disposed on the sidewall of the first inner cavity of the outer cylinder 1 to rub part of the sound energy of the airflow and convert the part of the sound energy into heat energy to be consumed, so as to weaken the sound wave. The outer cylinder 1 and the inner cylinder 2 are substantially cylindrical, and the first sound-deadening medium 6 is substantially annularly distributed on the inner side wall of the outer cylinder 1. The two end covers 21 at the two ends of the inner cylinder 2 can prevent the air flow from entering the second inner cavity of the inner cylinder 2, so that the speed of the air flow is influenced, and the two end covers 21 are in a conical shape so as to guide the air flow.

As shown in fig. 1 and 2, the silencer for the blower of the sand blasting machine of the present embodiment further includes a steel wire mesh 7 connected to the inner wall of the outer cylinder 1, and the steel wire mesh 7 is used for fixing the first silencing medium 6 distributed on the inner wall of the outer cylinder 1. The steel wire mesh 7 can be made of steel wires with the diameter of about 1.0cm, and meshes of the steel wire mesh are approximately square holes of 15cm × 15cm, so that the first silencing medium 6 and the airflow have enough contact area, and the silencing and noise reducing effects are ensured.

As shown in fig. 2 and 3, the inner cylinder 2 of the present embodiment has a hollow structure, and a plurality of through holes 22 are formed in a sidewall of the hollow structure, and the plurality of through holes 22 are uniformly distributed along a circumferential direction and an axial direction of the sidewall of the inner cylinder. Further, the inside of the inner tube 2 is provided with a second sound-deadening medium 8, and this second sound-deadening medium 8 completely fills the inside of the inner tube 2. In other words, the contour of the second sound-deadening medium 8 is substantially the same as the contour of the second inner cavity of the inner barrel 2. The second silencing medium 8 can be made of glass wool, and airflow noise can be absorbed by the second silencing medium 8 through the through holes 22 in the side wall of the inner barrel 2, so that the silencing effect of the silencer is further improved.

As shown in fig. 2, the connecting member of the present embodiment includes a plurality of sets of support rods 31, the plurality of sets of support rods 31 are distributed along the axial direction of the inner cylinder 2, each set of support rods 31 includes a plurality of support rods 31 uniformly distributed along the circumferential direction of the inner cylinder 2, and both ends of the support rods 31 are respectively connected with the inner cylinder 2 and the outer cylinder 1. Further, as shown in fig. 2 and 4, the coupling member may further include a reinforcing member 32 coupled to the sidewall of the inner tube 2, and one end of the support rod 31 facing the inner tube 2 is coupled to the reinforcing member 32. Specifically, the reinforcement 32 may have a ring shape and be connected to the inner sidewall of the inner cylinder 2, and one end of the support rod 31 is connected to the inner sidewall of the outer cylinder 1 and the other end is connected to the reinforcement 32.

In summary, in the silencer for the blower of the sand blasting machine according to the embodiment, the outer cylinder 1 and the first silencing medium 6 arranged on the inner side wall of the outer cylinder 1 can have good resistance sound absorption and noise reduction effects on the medium-frequency and high-frequency broadband characteristics of the air flow, and the outer cylinder 1 and the inner cylinder 2 can have good resistance sound absorption and noise reduction effects on the low-frequency and medium-frequency characteristics of the air flow.

The principle and the implementation mode of the utility model are explained by applying the specific embodiment, and the explanation of the above embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. The utility model provides a muffler that sand blasting machine fan used, its characterized in that, including the urceolus, set up in inside inner tube of urceolus, be used for connecting the urceolus with the connecting piece of inner tube, with the air-supply line of the air intake intercommunication of urceolus and with the play tuber pipe of the air outlet intercommunication of urceolus, be equipped with first amortization medium on the inside wall of urceolus, the inner tube is equipped with the end cover respectively along the both ends of axis direction, the urceolus with form airflow channel between the lateral wall of inner tube.

2. The silencer for the blower of the sand blasting machine as claimed in claim 1, further comprising a steel wire mesh attached to an inner wall of the outer barrel, the steel wire mesh being used to fix the first silencing medium.

3. The silencer for the blower of the sand blasting machine as claimed in claim 1, wherein the inner cylinder is of a hollow structure, and a plurality of through holes are formed in the side wall of the inner cylinder.

4. The silencer for the blower of a blasting machine according to claim 1, wherein the inner barrel is provided with a second silencing medium inside.

5. The sander fan silencer of claim 4, wherein said second silencing medium completely fills the interior of said inner barrel.

6. The silencer for the blower of the sand blasting machine according to claim 1, wherein the connecting member includes a plurality of support rod groups distributed in an axial direction of the inner cylinder, each support rod group includes a plurality of support rods uniformly distributed in a circumferential direction of the inner cylinder, and both ends of the support rods are connected to the inner cylinder and the outer cylinder, respectively.

7. The silencer for the blower of a blasting machine of claim 6, wherein the connector further includes a reinforcement member attached to the sidewall of the inner barrel, the support rod being attached to the reinforcement member toward an end of the inner barrel.

8. A blasting machine comprising a silencer according to any of claims 1 to 7 connected to a fan of said blasting machine.